Def. pub.
cannula coupler



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 0.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED OCTOBER 28, 1969 825,264 CANNULA COUPLER Daniel E. Carter, 20 Ave. E, Rochester, N.Y. 14621 Filed May 16, 1969. Published Oct. 28, 1969 Int. Cl. A61m 5/00 US. Cl. 128214 9 Sheets Drawing. 14 Pages Specification geg @fl 7 1 e w s sl A cannula coupler for an artificial kidney machine comprises intersecting tubes and a valve which permits extracorporeal blood flow from the patient, through the machine, and back to the patient, and alternatively permits shunt fiow which by-passes the machine. A fail-safe device actuates shunt flow in case the machine malfunctions.

Referring to FIGS. 6 and 7, two bars 12 and 13 at 90 to one another are arranged on opposite sides of a hollow plastic coupler having four conduits extending therefrom. Bar 12 squeezes the coupler so that blood from the patient enters at E' and is shunted to F and back to the patient.

When a linear solenoid 34 is energized, bar 13 presses the coupler and bar 12 down so that blood can flow from E to H and thence to an artificial kidney; then back through G and out at F to the patient.

A modification employs only one bar, with a rotary solenoid which raises, rotates, and lowers the bar. In others, two bars are connected together at 90 by a central member which extends through a central aperture in the hollow coupler; or by arcuate members.

D. E. CARTER DEF. PUB.

CAN NULA COUPLER Oct. 28, 1969 Filed May 16, 1969 9 Sheets-Sheet 1 FIG. I

BLOOD RETuRN TO PATIENT BLOOD FROM PATIENT FIG. 2

BLOOD RETURN \T0 PATIENT BLOOD FROM E PATIENT BLOOD PATH B FROM MACHINE R583 I ZT'IENT BACK TO PATIENT TQ I E 3 V INVENTOR DANIEL E. CARTER G BY WALTER OI HODSDON HENRY M. CHAPIN ATTORNEYS Oct. 28, 1969 D. E. CARTER DEF.PUB.

CANNULA COUPLER Filed May 16, 1969 9 Sheets-Sheet 2.

l I l l/f/ ll FIG. 5

INVENTOR DANIEL E. CARTER BY WALTER O. HQDSDON HENRY CHAPIN ATTORNEYS I 6252E I Oct. 28, 1969 D. E. CARTER DEF. Pu

CANNULA COUPLER Filed May 16, 1969 9 Sheets-Sheet 5 BLOOD RETURN\ I BLOOD FROM TO PATIENT F E PATIENT BLOOD RETURN BLOOD TO FROM MACHINE MACHINE .k'; in: J E w \\\\\I 2\\'\\ \\io 26 FIG. 7

INVENTOR DANIEL E. CARTER B Y WALTER O. I-IODSDON HENRY M CHAPIN ATTORNEYS Oct. 28, 1969 D. E. CARTER DEF. FEE.

CANNULA COUPLER Filed May 16, 1969 9 sheets sheet 4,

MONITOR A K M 0 POWER SOURCE A) 8 a //7 x, 4 ll/I/l/f/rl/Z HENRY M. CHAPI N ATTORNEYS T g 82 5 2 6 H Oct. 28, 1969 D. E. CARTER DEF. PUB.

CANNULA COUPLER Filed May 16, 1969 9 Sheets-Sheet s INVENTOR DANIEL E. CARTER BY WALTER O. HODSDON HENRY M CHAP] N ATTORNEYS DEF.FUB.

D. E. CARTER CANNULA COUPLER Oct. 28, 1969 9 Sheets-Sheet 6 Filed May 16, 1969 R o m T T .N R p. A W C I E L E N A D WM? 7 w k H 4 0 0 0 n o 6 NM 7 m o BY WALTER O. HODSDON HENRY M. CHAPIN ATTORNEYS D. E. CARTER CANNULA COUPLER p EF. PUB.

9 Sheets-Sheet 7 Filed May 16, 1969 QEDa INVENTOR DANIEL Ev CARTER BY WALTER O. HODSDON HENRY M. CHAPIN ATTORNEYS DEF. PUB.

D. E. CARTER OANNULA COUPLER Oct. 28, 1969 9 Sheets-Sheet 8 Filed. May 16, 1969 INVENTOR DANIEL E. CARTER BY WALTER O HODSDON HENRY M. CHAPIN ATTORNEYS DEF. PUB.

D. E. CARTER CANNULA COUPLER Oct. 28, 1969 Filed may 16, 1969 S R N CH O W MT M 9 R H0 t M n A av-m E HC m m M N m m R S DH 9 LIL WH Y B 

